The upshot of a demographic transition theory is that the total fertility rate declines with a lag, leading to a massive onetime bulge of population as the society transitions from high fertility and high mortality to low fertility and low mortality. At both the start and the end of the transition, the overall population growth is low, but during the transition, the population soars. The world has been in that transition, claims the theory, for the past two hundred years. In fifty years’ time, or earlier with good policies, the world will complete the transition and enter an era of population stability.
According to this theory, our rapidly growing population as of recently as well as today is nothing but a transition. That is to say our overcrowded planet is not an end result but is a process. Humanity in the next stage will settle down. The chaos that runs rampant today will die down. Peace and tranquility will be garnered. Order can be reestablished.
Today is nothing but the scrambling of people all over the world working towards peace. Imagine a world where everybody, including species other than humans, can get what they want. There will be no competition over resources.
Today the piñata has been ripped apart and everybody is rushing in trying to get all the candy they can get. Tomorrow will be like the Christmas dinner where everybody is family and each person has enough to eat and the leftovers are given to the people in need. The demographic transition theory holds huge implications for the future.